:root {
    --bg-color: #0a0c0a;
    --terminal-green: #33ff33;
    --terminal-dim: #11aa11;
    --terminal-dark: #052205;
    --error-red: #ff3333;
    --font-stack: 'Courier New', Courier, monospace;
}

body {
    background-color: var(--bg-color);
    color: var(--terminal-green);
    font-family: var(--font-stack);
    margin: 0;
    padding: 20px;
    overflow: hidden;
    height: calc(100vh - 40px);
}

.crt-overlay {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(rgba(18, 16, 16, 0) 50%, rgba(0, 0, 0, 0.25) 50%), linear-gradient(90deg, rgba(255, 0, 0, 0.06), rgba(0, 255, 0, 0.02), rgba(0, 0, 255, 0.06));
    background-size: 100% 4px, 6px 100%;
    z-index: 9999;
    pointer-events: none;
}

.panel {
    border: 2px solid var(--terminal-green);
    padding: 30px;
    max-width: 450px;
    margin: 100px auto;
    background-color: var(--bg-color);
    box-shadow: 0 0 15px var(--terminal-dark);
}

h2, h3, h4 {
    margin-top: 0;
    text-transform: uppercase;
    letter-spacing: 2px;
    border-bottom: 1px dashed var(--terminal-green);
    padding-bottom: 8px;
}

input, textarea {
    background-color: black;
    border: 1px solid var(--terminal-dim);
    color: var(--terminal-green);
    font-family: var(--font-stack);
    padding: 10px;
    width: 100%;
    box-sizing: border-box;
    margin-top: 5px;
}
input:focus, textarea:focus {
    outline: none;
    border-color: var(--terminal-green);
    box-shadow: 0 0 5px var(--terminal-green);
}

button {
    background-color: var(--terminal-dark);
    color: var(--terminal-green);
    border: 1px solid var(--terminal-green);
    font-family: var(--font-stack);
    padding: 10px 20px;
    cursor: pointer;
    text-transform: uppercase;
    margin-top: 15px;
}
button:hover {
    background-color: var(--terminal-green);
    color: black;
}

.hidden { display: none !important; }
.error-msg { color: var(--error-red); margin-top: 15px; font-weight: bold; }

.status-bar {
    border: 1px solid var(--terminal-green);
    padding: 8px;
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
    background-color: var(--bg-color);
}

.app-container {
    display: flex;
    height: calc(100vh - 120px);
    gap: 20px;
}

.sidebar {
    width: 200px;
    border: 1px solid var(--terminal-green);
    padding: 15px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    background-color: var(--bg-color);
}
.sidebar hr { border: none; border-top: 1px dashed var(--terminal-dim); width: 100%; }

.content-window {
    flex-grow: 1;
    border: 1px solid var(--terminal-green);
    padding: 20px;
    background-color: var(--bg-color);
    overflow-y: auto;
}

.mail-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 15px;
}

.mail-card {
    border: 1px solid var(--terminal-dim);
    padding: 12px;
    background-color: var(--bg-color);
}
.mail-card .meta {
    font-size: 0.85em;
    color: var(--terminal-dim);
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}
.mail-card .body {
    white-space: pre-wrap;
    line-height: 1.4;
}

.form-group { margin-bottom: 15px; }

.category-sublist {
    display: flex;
    flex-direction: column;
    padding-left: 12px;
    gap: 4px;
    margin-bottom: 5px;
}

.cat-item {
    font-size: 11px;
    color: var(--terminal-dim);
    cursor: pointer;
    padding: 4px 6px;
    border-left: 1px dashed var(--terminal-dark);
    text-transform: uppercase;
    letter-spacing: 1px;
}
.cat-item:hover {
    color: var(--terminal-green);
    background-color: var(--terminal-dark);
}
.cat-item.active {
    color: var(--terminal-green);
    font-weight: bold;
    border-left: 2px solid var(--terminal-green);
}

.terminal-dropdown-select {
    background-color: black;
    border: 1px solid var(--terminal-dim);
    color: var(--terminal-green);
    font-family: var(--font-stack);
    padding: 10px;
    width: 100%;
    box-sizing: border-box;
    margin-top: 5px;
    outline: none;
    cursor: pointer;
}
.terminal-dropdown-select:focus {
    border-color: var(--terminal-green);
    box-shadow: 0 0 5px var(--terminal-green);
}

.settings-box {
    border: 1px solid var(--terminal-dim);
    padding: 20px;
    background-color: var(--bg-color);
    margin-bottom: 20px;
}

.group-help-text,
.group-description {
    color: var(--terminal-dim);
    font-size: 12px;
    line-height: 1.5;
}

.group-card {
    margin-bottom: 0;
}

.group-card-header {
    align-items: flex-start;
    display: flex;
    gap: 15px;
    justify-content: space-between;
}

.group-card-header h4 {
    flex: 1;
}

.group-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: flex-end;
}

.group-membership {
    border: 1px dashed var(--terminal-dim);
    color: var(--terminal-dim);
    font-size: 10px;
    letter-spacing: 1px;
    padding: 5px 8px;
}

.group-membership.joined {
    border-style: solid;
    color: var(--terminal-green);
}

.group-membership.private {
    border-color: #ffaa00;
    color: #ffaa00;
}

.group-meta {
    border-bottom: 1px dashed var(--terminal-dark);
    color: var(--terminal-dim);
    font-size: 11px;
    margin: 12px 0;
    padding-bottom: 12px;
}

.group-member-controls {
    align-items: flex-end;
    display: grid;
    gap: 10px;
    grid-template-columns: minmax(160px, 1fr) auto;
    margin-bottom: 18px;
}

.group-owner-controls {
    align-items: end;
    border: 1px dashed var(--terminal-dim);
    display: grid;
    gap: 10px;
    grid-template-columns: minmax(180px, 1fr) auto;
    margin-bottom: 15px;
    padding: 12px;
}

.group-owner-controls label {
    font-size: 11px;
    grid-column: 1 / -1;
}

.group-owner-controls button {
    margin-top: 5px;
}

.group-owner-note {
    color: var(--terminal-dim);
    font-size: 11px;
    grid-column: 1 / -1;
    padding: 7px 0;
}

.group-member-directory {
    background: rgba(0, 0, 0, 0.35);
    border: 1px dashed var(--terminal-dim);
    margin-bottom: 15px;
    padding: 12px;
}

.group-member-directory-title {
    font-size: 11px;
    margin-bottom: 8px;
}

.group-member-directory ul {
    color: var(--terminal-dim);
    font-size: 12px;
    line-height: 1.6;
    list-style: none;
    margin: 0;
    padding: 0;
}

.group-member-directory li::before {
    content: "> ";
    color: var(--terminal-green);
}

.group-member-controls > button:only-child {
    grid-column: 2;
}

.group-member-controls button,
.group-send-button {
    margin-top: 5px;
}

.group-send-button {
    width: 100%;
}

.group-send-label {
    display: block;
    font-size: 12px;
    margin-bottom: 3px;
}

.group-card-status,
.group-success-msg {
    color: var(--terminal-green);
    font-size: 12px;
    margin-top: 12px;
}

.group-empty-state {
    border: 1px dashed var(--terminal-dim);
    color: var(--terminal-dim);
    padding: 20px;
    text-align: center;
}

@media (max-width: 700px) {
    .group-member-controls {
        grid-template-columns: 1fr;
    }

    .group-owner-controls {
        grid-template-columns: 1fr;
    }

    .group-member-controls > button:only-child {
        grid-column: 1;
    }
}
.history-wrapper { position: relative; margin-top: 5px; }
.history-toggle { background: transparent; color: var(--terminal-dim); border: 1px dashed var(--terminal-dim); padding: 4px 10px; cursor: pointer; font-family: var(--font-stack); font-size: 11px; text-transform: uppercase; }
.history-toggle:hover { color: var(--terminal-green); border-color: var(--terminal-green); }
.history-dropdown { position: absolute; top: 28px; left: 0; width: 100%; max-width: 400px; z-index: 100; max-height: 155px; overflow-y: auto; background-color: var(--bg-color); border: 1px solid var(--terminal-green); }
.history-item { padding: 6px 10px; cursor: pointer; font-size: 13px; border-bottom: 1px solid var(--terminal-dark); }
.history-item:hover { background: var(--terminal-dark); color: #fff; }
.history-item.empty { color: var(--terminal-dim); cursor: default; }

.file-upload-input { background: transparent; color: var(--terminal-green); border: 1px solid var(--terminal-dim); padding: 5px; width: 100%; margin-top: 5px; box-sizing: border-box; }
.custom-category-input { background: transparent; color: var(--terminal-green); border: 1px solid var(--terminal-dim); padding: 7px; width: 100%; margin-top: 7px; box-sizing: border-box; font-family: var(--font-stack); text-transform: uppercase; }
.custom-category-input:focus { border-color: var(--terminal-green); outline: none; box-shadow: 0 0 6px var(--terminal-dark); }
.attachment-payload-box { margin-top: 12px; padding: 8px; border: 1px dashed var(--terminal-green); background: rgba(0, 0, 0, 0.4); display: flex; flex-direction: column; align-items: flex-start; gap: 8px; max-width: min(100%, 760px); box-sizing: border-box; }
.attachment-embed { display: block; width: 100%; max-width: 720px; border: 1px solid var(--terminal-dim); background: #000; box-sizing: border-box; }
.attachment-image { width: auto; max-height: 520px; object-fit: contain; }
.attachment-audio { min-width: min(100%, 320px); border: 0; }
.attachment-video { max-height: 520px; }
.attachment-document { height: min(65vh, 640px); min-height: 320px; }
.download-link { text-decoration: none; font-weight: bold; color: var(--terminal-green); font-size: 12px; }
.download-link:hover { color: #fff; text-shadow: 0 0 5px var(--terminal-green); }

.color-picker-group { display: flex; align-items: center; gap: 15px; margin-top: 12px; }
.color-picker-group label { font-size: 12px; flex: 1; }
.matrix-color-wheel { background: transparent; border: 1px solid var(--terminal-green); cursor: pointer; width: 50px; height: 30px; padding: 0; }
.system-version-tag { position: fixed; bottom: 10px; left: 15px; font-size: 12px; color: var(--terminal-dim); pointer-events: none; letter-spacing: 1px; }

.verity-goodbye { position: fixed; z-index: 10000; right: 18px; bottom: 12px; display: flex; flex-direction: column; align-items: flex-end; pointer-events: none; text-shadow: none; }
.verity-goodbye-speech { position: relative; box-sizing: border-box; width: 300px; height: 200px; padding: 31px 28px 44px; }
.verity-goodbye-frame { position: absolute; z-index: 0; inset: 0; width: 300px; height: 200px; transform: scaleX(-1); image-rendering: pixelated; image-rendering: crisp-edges; }
.verity-goodbye-speech p { position: relative; z-index: 1; margin: 0; color: #000; font-family: Arial, Helvetica, sans-serif; font-size: 15px; font-weight: 600; line-height: 1.35; text-shadow: none; }
.verity-goodbye-character { width: 129px; height: 132px; object-fit: contain; object-position: right bottom; image-rendering: pixelated; image-rendering: crisp-edges; filter: drop-shadow(0 6px 9px rgba(0, 0, 0, .55)); }

@media (max-width: 700px) {
    .verity-goodbye { right: 8px; bottom: 8px; }
}

.mail-delete-button {
    width: auto;
    margin: 0 0 0 auto;
    padding: 3px 8px;
    border-color: #ff3333;
    color: #ff3333;
    font-size: 10px;
}

.mail-delete-button:hover {
    background: #ff3333;
    color: #000;
    box-shadow: none;
    text-shadow: none;
}

/* Modern mail interface */
:root,
:root[data-theme="dark"] {
    --bg-color: #111318;
    --surface: #191c23;
    --surface-raised: #20242d;
    --surface-hover: #292e39;
    --terminal-green: #f1f4f8;
    --terminal-dim: #aeb6c5;
    --terminal-dark: #343a47;
    --accent: #7c9cff;
    --accent-hover: #96afff;
    --accent-soft: rgba(124, 156, 255, .14);
    --border: #303540;
    --error-red: #ff6b75;
    --shadow: 0 18px 50px rgba(0, 0, 0, .32);
    --font-stack: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

:root[data-theme="light"] {
    --bg-color: #f4f6fa;
    --surface: #ffffff;
    --surface-raised: #ffffff;
    --surface-hover: #edf1f8;
    --terminal-green: #1d2433;
    --terminal-dim: #667085;
    --terminal-dark: #d7dce5;
    --accent: #315fd6;
    --accent-hover: #244cad;
    --accent-soft: rgba(49, 95, 214, .10);
    --border: #dfe3ea;
    --error-red: #c93645;
    --shadow: 0 18px 48px rgba(31, 42, 68, .12);
}

* { scrollbar-color: var(--terminal-dark) transparent; }

body {
    background: var(--bg-color);
    color: var(--terminal-green);
    font-family: var(--font-stack);
    height: 100vh;
    padding: 0;
    transition: background-color .2s ease, color .2s ease;
}

.crt-overlay { display: none; }

.panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 18px;
    box-shadow: var(--shadow);
    margin: max(8vh, 40px) auto;
    max-width: 420px;
    padding: 38px;
}

.panel h2 { font-size: 25px; margin-bottom: 12px; }
.panel > p { color: var(--terminal-dim); line-height: 1.55; margin-bottom: 28px; }

h2, h3, h4 {
    border: 0;
    letter-spacing: 0;
    text-transform: none;
}

h3 { font-size: 24px; margin-bottom: 22px; }
h4 { font-size: 16px; margin-bottom: 16px; }
label { color: var(--terminal-dim); display: block; font-size: 13px; font-weight: 600; }

input, textarea, .terminal-dropdown-select, .custom-category-input {
    background: var(--surface-raised);
    border: 1px solid var(--border);
    border-radius: 9px;
    color: var(--terminal-green);
    font-family: var(--font-stack);
    font-size: 14px;
    padding: 11px 12px;
    text-transform: none;
}

input:focus, textarea:focus, .terminal-dropdown-select:focus, .custom-category-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
    outline: none;
}

button {
    background: var(--surface-raised);
    border: 1px solid var(--border);
    border-radius: 9px;
    color: var(--terminal-green);
    font-family: var(--font-stack);
    font-size: 14px;
    font-weight: 600;
    padding: 10px 15px;
    text-transform: none;
    transition: background-color .15s ease, border-color .15s ease, color .15s ease, transform .15s ease;
}

button:hover { background: var(--surface-hover); color: var(--terminal-green); }
button:active { transform: translateY(1px); }

.panel button:first-of-type, .sidebar > button:first-child, #view-compose > button {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}
.panel button:first-of-type:hover, .sidebar > button:first-child:hover, #view-compose > button:hover { background: var(--accent-hover); }

.status-bar {
    align-items: center;
    background: var(--surface);
    border: 0;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
    font-weight: 600;
    height: 62px;
    margin: 0;
    padding: 0 24px;
}

.status-bar span:first-child { color: var(--accent); font-size: 19px; font-weight: 750; }
.status-bar #user-display { color: var(--terminal-dim); font-weight: 500; }

.app-container { gap: 0; height: calc(100vh - 63px); }

.sidebar {
    background: var(--surface);
    border: 0;
    border-right: 1px solid var(--border);
    box-sizing: border-box;
    gap: 5px;
    padding: 18px 14px;
    width: 238px;
}

.sidebar button {
    background: transparent;
    border: 0;
    color: var(--terminal-dim);
    margin: 0;
    padding: 11px 13px;
    text-align: left;
    width: 100%;
}
.sidebar button:hover { background: var(--surface-hover); color: var(--terminal-green); }
.sidebar > button:first-child { margin-bottom: 9px; padding: 12px 15px; text-align: center; }
.sidebar hr { border-color: var(--border); margin: 8px 0; }

.category-sublist { gap: 2px; margin: 0 0 6px; padding: 3px 0 3px 18px; }
.cat-item {
    border: 0;
    border-radius: 7px;
    color: var(--terminal-dim);
    font-size: 11px;
    letter-spacing: .02em;
    padding: 7px 10px;
    text-transform: none;
}
.cat-item:hover { background: var(--surface-hover); color: var(--terminal-green); }
.cat-item.active { background: var(--accent-soft); border: 0; color: var(--accent); }

.content-window {
    background: var(--bg-color);
    border: 0;
    padding: 30px clamp(22px, 4vw, 58px);
}
.mail-view { margin: 0 auto; max-width: 1050px; }

.mail-list { gap: 8px; }
.mail-card, .settings-box {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
}
.mail-card { padding: 15px 17px; transition: border-color .15s ease, transform .15s ease; }
.mail-card:hover { border-color: var(--accent); transform: translateY(-1px); }
.mail-card .meta { color: var(--terminal-dim); font-size: 12px; }
.mail-card .body { color: var(--terminal-green); line-height: 1.6; }

.settings-box { margin-bottom: 16px; padding: 22px; }
.settings-description, .group-help-text, .group-description { color: var(--terminal-dim); font-size: 13px; line-height: 1.55; }

.history-toggle { background: transparent; border-color: var(--border); color: var(--terminal-dim); }
.history-dropdown { background: var(--surface-raised); border: 1px solid var(--border); border-radius: 9px; box-shadow: var(--shadow); overflow: hidden; }
.history-item { border-color: var(--border); }
.history-item:hover { background: var(--surface-hover); color: var(--terminal-green); }

.group-member-directory { background: var(--surface-raised); border: 1px solid var(--border); border-radius: 9px; }
.group-membership { border-color: var(--border); border-radius: 999px; }
.group-membership.joined { color: var(--accent); }
.group-success-msg { color: var(--accent); }

.theme-options { display: grid; gap: 12px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.theme-option { align-items: center; display: flex; gap: 13px; margin: 0; padding: 14px; text-align: left; }
.theme-option.active { background: var(--accent-soft); border-color: var(--accent); }
.theme-option strong, .theme-option small { display: block; }
.theme-option small { color: var(--terminal-dim); font-size: 11px; font-weight: 400; margin-top: 3px; }
.theme-swatch { border: 1px solid #848b98; border-radius: 50%; flex: 0 0 28px; height: 28px; }
.theme-swatch-dark { background: linear-gradient(135deg, #161920 50%, #7c9cff 50%); }
.theme-swatch-light { background: linear-gradient(135deg, #fff 50%, #315fd6 50%); }

.attachment-payload-box { background: var(--surface-raised); border-color: var(--border); border-radius: 9px; }
.download-link { color: var(--accent); }
.system-version-tag { color: var(--terminal-dim); opacity: .55; }
.verity-goodbye { display: none !important; }

@media (max-width: 760px) {
    body { height: 100dvh; min-height: 100dvh; }
    .status-bar { box-sizing: border-box; height: 58px; padding: 0 14px; }
    .status-bar #user-display { max-width: 48vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .app-container { display: grid; grid-template-rows: auto minmax(0, 1fr); height: calc(100dvh - 58px); }
    .sidebar {
        -webkit-overflow-scrolling: touch;
        border-bottom: 1px solid var(--border);
        border-right: 0;
        flex-direction: row;
        height: auto;
        overflow-x: auto;
        overscroll-behavior-inline: contain;
        padding: 9px;
        scrollbar-width: none;
        width: 100%;
    }
    .sidebar::-webkit-scrollbar { display: none; }
    .sidebar > button, .sidebar > button:first-child { flex: 0 0 auto; margin: 0; min-height: 42px; min-width: max-content; padding: 10px 13px; text-align: center; width: auto; }
    .sidebar hr, .category-sublist { display: none !important; }
    .content-window { box-sizing: border-box; height: auto; min-height: 0; overflow-x: hidden; overflow-y: auto; padding: 22px 14px 72px; }
    .theme-options { grid-template-columns: 1fr; }
    .panel { border: 0; border-radius: 0; box-shadow: none; box-sizing: border-box; margin: 0; min-height: 100dvh; padding: max(38px, 7vh) 22px; }
    .panel > div[style*="display: flex"] { flex-wrap: wrap; }
    .panel > div[style*="display: flex"] button { flex: 1 1 145px !important; }
    input, textarea, select { font-size: 16px !important; }
    h3 { font-size: 21px; }
    .mail-card .meta { align-items: flex-start; display: grid; grid-template-columns: minmax(0, 1fr) auto; }
    .mail-card .meta > * { min-width: 0; overflow-wrap: anywhere; }
    .mail-card .body, .group-description, .group-meta { overflow-wrap: anywhere; }
    .settings-box, .mail-card { box-sizing: border-box; max-width: 100%; padding: 16px; }
    .group-card-header { align-items: stretch; flex-direction: column; gap: 8px; }
    .group-badges { justify-content: flex-start; }
    .group-member-controls, .group-owner-controls { grid-template-columns: minmax(0, 1fr); }
    .group-member-controls > button:only-child { grid-column: 1; }
    .group-member-controls button, .group-owner-controls button, .group-send-button { width: 100%; }
    .attachment-payload-box { width: 100%; }
    .attachment-embed, .attachment-image, .attachment-video { height: auto; max-width: 100%; width: 100%; }
    .attachment-audio { min-width: 0; width: 100%; }
    .attachment-document { height: 55dvh; min-height: 260px; }
    .system-version-tag { bottom: 4px; font-size: 9px; left: 6px; }
}

@media (max-width: 420px) {
    .status-bar span:first-child { font-size: 16px; }
    .status-bar #user-display { max-width: 46vw; }
    .content-window { padding: 18px 10px 68px; }
    .settings-box, .mail-card { padding: 13px; }
    .theme-option { padding: 12px; }
}